Weight / obesity management is basically managing a chronic condition, that's why time-limited interventions (workout camps, fasting, dieting, drug injections for a few months) don't work - you have to continuously manage the issue. The idea that you have an issue (obesity) and then make an intervention (loose weight) and therefore the issue is resolved (you are no longer obese) is just wrong. It needs to be managed from either the demand side (regular GLP-1 agonist injections to suppress hunger) or the supply side (eating less / better food). Hence: Dieting = never works. Building sustainable habits or continuous administering of GLP-1 = always works.
(Or you're one of the 5% or so of people with a rare gene variation that basically prevents major fat build-up in the body and there's just nothing to manage for you about that — this would've been a pretty disadvantageous adaption in the past, but it's fair to say that the other 95% are maladpated to the last couple thousand years of human life).